Weather · December
Mission Viejo weather in December
Average highs of 67°F, lows of 44°F and 1.9 in of rain, from 30 years of weather records.
December is Mission Viejo’s coldest month, with average highs of 67°F and lows of 44°F. That is 5° cooler than November, and 7° below the yearly average high.
- Average high
- 67°F
- Average low
- 44°F
- Precipitation
- 1.9 in
- Wet days
- 4
- Sunrise · sunset
- 6:47 AM · 4:44 PM
What to wear in December
- Mild days: dress in layers, with a light jacket or sweater for mornings and evenings.
What December weather is good for
What’s on in Mission Viejo in December
Guides for this month: Christmas in Mission Viejo · New Year’s Eve in Mission Viejo.
- Santa's Workshop, Photos and LettersDecember 2 – December 20 · 6:00 to 8:00 p.m. Wednesdays, Saturdays and Sundays · Santa's Village, Civic Center Plaza, Mission Viejo
- Feast of LightsDecember 5 – December 6 · 2:00 and 5:00 p.m. each day · McKinney Theatre, Saddleback College, Mission Viejo
- Community Chanukah WonderlandSunday, December 6 · 3:00 to 5:00 p.m. · Norman P. Murray Community & Senior Center, Mission Viejo
- Sensory Santa Meet & GreetSunday, December 6 · 10:00 to 11:00 a.m. · Friends Storytime Room, Mission Viejo Library
- Dana Point Harbor Boat Parade of LightsDecember 11 – December 13 · 6:30 to 8:00 p.m. nightly · Dana Point Harbor, Dana Point
- Holiday Caroling at the Potocki CenterSaturday, December 12 · 5:00 to 7:00 p.m. · Potocki Center for the Arts patio, Mission Viejo
- Newport Beach Christmas Boat ParadeDecember 16 – December 20 · About 6:30 p.m. nightly · Newport Harbor, Newport Beach (Marina Park is the largest free viewing area)
- Winter GalaFriday, December 18 · 6:30 to 9:00 p.m. · Norman P. Murray Community & Senior Center, Mission Viejo
- Jane Austen Holiday BallSaturday, December 19 · 6:00 to 9:00 p.m. · Norman P. Murray Community & Senior Center, Mission Viejo
- Winter Fest at the LibraryWednesday, December 23 · 4:30 to 6:00 p.m. · Mission Viejo Library
- Noon Year's Eve at the LibraryThursday, December 31 · 10:30 a.m. to noon · Mission Viejo Library
See all upcoming events.
December compared with the months around it
Planning a trip? See the best time to visit Mission Viejo and today’s forecast.
Questions
How hot does it get in Mission Viejo in December?
Average highs are 67°F and average lows 44°F, for a daily mean of 56°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Mission Viejo in December?
December averages 1.9 in of precipitation over about 4 days with at least 0.01 in. It is the 3rd wettest month of the year.
What time is sunset in Mission Viejo in December?
Around mid-December the sun rises about 6:47 AM and sets about 4:44 PM, for roughly 9.9 hours of daylight.
Is December a good time to visit Mission Viejo?
The mildest months for visiting are June, July, August. December is mild, with Christmas lights and New Year’s Eve events.
NOAA U.S. Climate Normals 1991–2020, Laguna Beach station (7.9 mi from downtown). Sunrise and sunset are calculated for December 15 at the city’s coordinates.